Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL085446 |
STEVE and the Picket Fence: Evidence of Feedback-Unstable Magnetosphere-Ionosphere Interaction | |
Mishin, Evgeny1; Streltsov, Anatoly2,3 | |
2019-12-23 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | This paper aims to extend the understanding of Strong Thermal Emission Velocity Enhancement (STEVE) and the Picket Fence related to strong subauroral ion drifts (SAID). We numerically demonstrated that precipitating energetic electrons are critical for the structuring of the Picket Fence. It is created by feedback-unstable magnetosphere-ionosphere interactions driven by the SAID electric field when the Hall conductance created by energetic (>= 1 keV) electrons exceeds the Pedersen conductance. We show that thermal excitation of the red-line emission in STEVE is inhibited by inelastic collisions with molecular nitrogen. Suprathermal (<= 500 eV) electrons coming from the turbulent plasmasphere appear to be the major source. We also show that the chemiluminescencent and radiative attachment reactions do not explain the short-wavelength part of the STEVE continuum and argue that accounting for vibrational excitation may resolve the problem. Atmosphere's upwelling due to enhanced ion-neutral drag leads to the increased abundance of molecular components relative to atomic oxygen. |
英文关键词 | STEVE feedback-unstable MI coupling effect of the Hall conductance suprathermal electron excitation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000503924700001 |
WOS关键词 | SAR ARC ; ELECTRODYNAMICS ; DYNAMICS ; ENERGY ; RADAR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225239 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM 87123 USA; 2.Embry Riddle Aeronaut Univ, Dept Phys Sci, Daytona Beach, FL USA; 3.AFRL, Summer Fac, Space Vehicle Directorate, Albuquerque, NM USA |
推荐引用方式 GB/T 7714 | Mishin, Evgeny,Streltsov, Anatoly. STEVE and the Picket Fence: Evidence of Feedback-Unstable Magnetosphere-Ionosphere Interaction[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Mishin, Evgeny,&Streltsov, Anatoly.(2019).STEVE and the Picket Fence: Evidence of Feedback-Unstable Magnetosphere-Ionosphere Interaction.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Mishin, Evgeny,et al."STEVE and the Picket Fence: Evidence of Feedback-Unstable Magnetosphere-Ionosphere Interaction".GEOPHYSICAL RESEARCH LETTERS (2019). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论